Cleveland C33161 Square End Mill 17/32 Inch 4 Flute Hss

Product Description

The CLEVELAND C33161 is a 4-flute, single-end square end mill machined from high speed steel (HSS), designed for milling flat surfaces, slots, and shoulders in ferrous and non-ferrous materials. It carries a 17/32 inch (0.5313 inch) cutting diameter with a 1-3/8 inch length of cut and a 1/2 inch straight-cylindrical shank that also accepts a Weldon flat drive. The 30-degree spiral flute geometry promotes chip evacuation and stable cutting. This is an uncoated, center-cutting tool, meaning it can be plunged directly into the workpiece. It belongs to Cleveland's HG-4C series and is intended for use in manual mills and CNC machining centers by machinists and toolroom technicians.

The C33161 is suited for general-purpose milling operations in job shops, maintenance machining, and production environments. Primary workpiece materials include cast iron, non-ferrous metals, and steel. The regular-length geometry keeps the tool rigid and minimizes deflection during slotting and peripheral milling passes. At 3-3/8 inch overall length, it fits standard toolholders and collet chucks without excessive overhang.

Key Features

• Center-cutting design allows direct plunge entry without a pre-drilled hole
• 30-degree helix angle promotes smooth chip flow and reduced cutting forces
• 4-flute configuration balances material removal rate with chip clearance
• High speed steel construction provides toughness and resharpening capability
• Straight-cylindrical shank with Weldon flat accepts set-screw toolholders and collet chucks
• Uncoated finish — suitable for regrinding and compatible with cutting fluid use

Compatibility

Designed as an OEM-style replacement or standard toolroom end mill compatible with 1/2 inch collet chucks, end mill holders, and Weldon-flat-style toolholders used in vertical mills and CNC machining centers.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Always power down and lock out the spindle before changing tooling. Ensure the shank is fully seated in the holder to the recommended insertion depth and that set screws or collet clamping torque meets the toolholder manufacturer's specification. Inspect the cutting edges for chips or wear before each use; a damaged edge on an HSS end mill can cause tool pull-out or workpiece damage at speed.